Pipe fitting



June 2, 1942.

E. J. wenn 2,284,937

PIPE FITTING l Y Filed Feb. 1`7,` 1941 2 sheets-sheet 1 Smaentor f Gttornei June 2, 1942. E, J, woon 2,284,937

` PiPE FITTING Filed Feb. 1'7, 1941 2 Sheets-Sheet 2 Snuentor Edwin J. Wood 3.7.8 f N y Patented June 2, 1942 A v UNETED STATES 'PATENT OFFICE PIPE FITTING Edwin J. Wood, Detroit, Mich. Application February, 17, 1941', serial No. 379,255 12 claims. `(c1. m55- 210) This invention relates to pipe iittings and particularly pipe Ts.

In many iiuid systems and particularly in hot water systems of heating, it is necessary to provide both delivery and return ducts for handling the fluid flow required by heating or other appliances. The general practice has been to separately form said ducts, although they commonly lie in close mutual proximity.

In hot water radiator systems, it is usual and desirable to divert only a portion of the ow from a delivery main to each radiator and to discharge the return flow from the several radiators into a common return main.

An object of the invention is to provide partitioned pipe suited to handle both the delivery and return flow of fiuids, and to provide a T particularly suited for use with such pipe and adapted to divert a predetermined portion of the main delivery flow, and to direct a fractional re- Fig. 3 is a transverse sectional view, taken on the line 3 3 of Fig. 1.

Fig. 4 is a sectional view similar to Fig. 1 but disclosing a modified construction.

Fig. 5 is a transverse sectional view taken on the line 5 5 of Fig. 4.

Fig. 6 is a sectional View of the T in a further modified form, the section being taken in a plane determined by the three aXes of the T.

Fig. 7 is a View similar to Fig. 6, showing pipes engaged with the T.

Fig. 8 is a transverse sectional View of the further modification, taken on the line 8 8 of Fig. 7.

Fig. 9 is a cross sectional view of one of the pipes Vshown in Fig. 7, taken on the line 9 9 of Fig. 7.

In the construction shown by Figs. 1, 2, and 3. the reference character I designates a hollow fitting, preferably a casting, having opposed equal openings 2 and 3, and a relatively transverse opening 4 which will generally be smaller than the openings 2 and 3. Pipes 5, 6 and 'I are set into the openings 2, 3 and 4 and are retained and sealed therein in any desired manner, as by interposing a capillary ring 8 of solder between the inserted pipe ends and the fitting. Said pipes are diametrlcally partitioned, as indicated at 9, thus forming similar ducts I5 and II in each pipe.

Within the fitting I, at suitable distances from its three ends, are annular shoulders I2` against which the ends of the pipes abut, and between vsuch shoulders Within the openings 2 and 3 there extends a partition I3 transverse to the fitting axes and bisecting both said openings. Merging into the partition I3 is a curved partition I transverse to the fitting axes andextending approximately from the shoulder AI2 within the opening 4 and bisecting said opening. Integrally connected to the lower portion of the partition I4, at its convex side, is a duct I5 which downwardly extends one of the two passages formed in the opening 4 and which opens through the partition I3. The partition I4 is apertured atV each side of the duct I5, as indicated at I6.

Preferably the ends of the partition I 3 and the upper 'end of the partition I4 are enlarged and vchanneled as indicatedrat II to receive the parof the pipe 'I. Said duct discharges to any suitable appliance (not shown) as a radiator, and the relatively cold return flow from the latter is accommodated by the duct II of the pipe l. Such return fiow is carried by the Iduct I5 to the passage beneath the partition I3 which delivers it to the main return duct I I of the pipe 5.

In the modification illustrated by Figs. 4 and 5, the T iitting la has opposed openings 2a and 3a and partitions I3a and I4a as first described, and the partition I4a forms one wall of a duct I5a curved conformingly to said partition and serving to deliver a return flow from a radiator or the like to the passage below the partition I3a. The downward return fiow, however, is split by passages I8 at opposite sides of a short duct I9 extending through the duct Iia just above the partition I3a and serving to allow a portion of the hot water stream to flow substantially straight through the fitting. Two openings in the partition I3a to accommodate return now are formed at opposite sides of the duct I9, said openings thus extending the passages I8 through said partition.

In the modification shown in Figs. 6-9, the fitting Ib has opposed openings 2b and 3b and a relatively transverse opening 4b. Pipes 5b, 6b, and 'ib engage in said openings and each of said pipes is diametrically partitioned, as indicated at 9b in the plane determined by the axes of the fitting. In said plane the fitting is formed with a partition extending between the two opposed openings, and the partitions of said pipes substantially abut said fitting partition. It is preferred to form the latter with a recess' 2l shaped to snugly receive the inner end portion of the pipe 'Ib and said end is cut obliquely to the pipe axis so that uid flowing at one side of the fitting partition will in part be obstructed by the beveled pipe end and thus be directed into the passage formed in said pipe at the corresponding side of the pipe partition.

In any of its described forms, the invention substitutes a single line of pipe for two separate lines and thus accomplishes a considerable saving of material and a still greater saving of labor.

What I claim is: c

l. A pipe T having two substantially opposed openings and an opening substantially transverse to the opposed openings, and having two separate passages connecting said opposed openings, and having two separate passages respectively connecting the respective first mentioned passages with said transverse opening.

2. The combination with a pipe T having two substantially opposed openings and an opening substantially transverse to the opposed openings, and having two separate passages connecting said opposed openings, of a pipe inserted in said third opening and having a partition forming two passages lengthwise of the pipe and respectively communicating with the respective separate passages of the fitting,

3. A pipe T having two substantially opposed openings and an opening substantially transverse to the axes of said openings, a partition forming two separate passages connecting the opposed openings, and a duct extending from the third opening and opening through said partition, said duct having a capacity less than that of the third opening.

4. A pipe T having two substantially opposed openings and an opening substantially transverse to the opposed openings, a partition substantially transverse to the axes of said openings forining two separate passages connecting the opposed openings, one adjacent to and the other remote from the transverse opening, a second partition extending from the first partition and dividing the transverse opening, and a duct formed conjointly with the second partition and connecting said remote passage with one of the divisions ofthe transverse opening.

5. A pipe T having two substantially opposed openings and an opening substantially transverse to the opposed openings, a partition substantially transverse to the axes of said openings, forming two separate passages connecting the opposed openings, forming two separate passages connecting the opposed openings, and a duct of less capacity than the transverse opening extending from the transverse opening to and opening through said partition, one of said passages being extended through said duct.

6. The combination with a pipe T having opposed openings and a relatively transverse opening, and having a partition extending between, and forming two passages connecting the opposed openings and disposed substantially in the axial plane of the three openings, of a pipe inserted in said transverse opening and formed with a partition extending substantially along the axis of said pipe, the pipe partition and fitting partition occupying substantially a cornmon plane and having substantially mutually abutting relation.

7. The combination as set forth in claim 6, the fitting partition having an opening into which said pipe is fitted.

8. 'Ihe combination with a pipe fitting and a pipe inserted in said fitting, the pipe and fitting being formed with registering partitions and one of said partitions having a terminal socket receiving an end of the other partition.

9. The combination with a pipe fitting having opposed openings and having a third opening between said opposed openings, and having a partition extending between the opposed openings and forming two passages connecting the opposed openings, of a pipe inserted in said third opening and having a partition forming two passages lengthwise of the pipe, thepipe partition and fitting partition abutting in a plane substantially common to said partitions` l0. The combination set forth in claim 9, the pipe being extended into the iitting and termihating between the opposed openings in an end beveled obliquely to the pipe in a plane substantially transverse to the fitting partition, the ntting partition being recessed to receive the pipe.

ll. The combination with a pipe fitting and a pipe inserted in said fitting, the pipe and tting being formed with registering partitions, one of said partitions forming a channel snugly accommodating the other partition.

12. A pipe fitting having two substantially opposed openings, a third. opening, and a partition forming two passages between the opposed openings, one relatively close to and the other relatively remote from the third opening, and aduct extending from the third opening through said adjacent passage to said partition, and opening through the partition into said remote passage, said duct exteriorly affording a connection to the third opening from said adjacent passage.

EDWIN J. WOOD. 

